Music-leaf turner



(No Model.)

` E. J. WITTEBOLLB.

MUSIC LEAP TURNER.

Patented Deo. 17, 1889.

WlTNESSES:

4o movements.

UNITED STATES EMILE J. VITTEBOLLE, OF l OAMDEN,

NEV JERSEY, ASSIGNOR TO JOIIN J.

BOYLE, OF PHILADELPHIA, PENNSYLVANIA.

MUSIC-LEAF TURNER.

SPECIFICATION forming part of Letters P atent No. 417,696, dated December 17, 1889.

Application led February 28, 1889. Serial No. 301,512. (No model.)

To all whom it may concern.-

Be it known that l, EMILE J. WITTE- BOLLE, a citizen of the Republic of France, and a resident of the city and county of Oam- 5 den, and State of New Jersey, have invented certain new and useful Improvements in Music-Leaf Turners, of which the following is a specification.

My invention relates to improvements in 1o that class of machines called music-leaf turners, the object of which is to automatically turn the leaves of 1n usic-books or sheetmusic while playing at the piano or other musical instrument, and the object of my in- I 5 vention is to furnish a music-leaf turner which will be simple, inexpensive, and positive in action.

In the accompanying drawings, forming part 'of this specification, and in which similar zo letters of reference indicate similar parts throughout the several views, Figure lis a plan of my music-leaf turner; Fig. 2, a plan with the top removed, the finger-releasing mechanism being in its first position; Fig. 3,

a plan with the top removed, the finger-releasing mechanism being in its last position;

Fig. 4, a side elevation, the top being in section; Fig. 5, a bottom view of the top, and

Fig. 6 a sectional elevation of a leaf-turning 3o finger.

A is the base of the instrument; B, the top or cover, O, a rack furnished with a slot D.

E E are two screws or their equivalent passing through slot D and secured to base 3 5 A, and which serve to guide the rack C in its movements.

F is a rack furnished with a slot G, through which a screw I-I passes and is secured to base A. This screw guides the rack F in its To the outer end of rack F one end of a link I is attached, the other end of this link being attached to a bell-crank lever J, which is pivoted at K to the base A.

L is a pawl pivoted at M to base A, and furnished with a proj ect-ing nose N, which lies under the inner end of rack F, and with a tooth O, which engages with the teeth of rack C.

P is a spring, one end 5o to rack C and the other on base A.

of which is attachedl to a pin or screw P Q is a spring having` one end attached to inside end of rack F and the other to screw E.

R is a spring, one end of which is attached to a screw R on base A and the other to bellcrank J and J.

a is a rod or screw attached to rack C, and which passes up and through a slot T in the top B, and is secured to a latch b.

c c o2 c3 c4 c5 are arms which are carried on a pivot d, which is carried bythe top B or by supports carried by this top. These arms are bent up, as shown at e, and over this bent-up part the leaf-turning fingers f are placed.

g are springs, one end of which are secured to chains t', which are secured to the arms c c', 850., or to the hubs j, to which these arms are secured, the other ends being secured to a rod h passing across the top B.

k is a screw or rod, one end of which is secured to pawl L, and which passes up and through the top B through a slot Z..

The device is operated as follows: As many of the arms c c c2, dac., as there are leaves of music to be turned are fitted with the fingers f, and the leaves are placed between the bifurcated ends of the iingers. The latch l) is now in the position shown in Fig. 2.` Then it is desired to turn the first leaf, the lever J is struck bythe hand and depressed, an d this,

through link I, draws over rack F, which draws over rack O through the space of one tooth, and this rack, through screw a, draws latch l) over the same distance, releasing the first arm c, which, through the spring g and chain fz', is thrown over into the position shown by the dotted lines, Fig. l, and with it the leaf which is held by the finger f. The second, third, and fourth fingers, dac., are released in the same way, each turning its leaf. The lever J is returned to its original position by spring R, and the rack F and pawl L, the latter of which holds the rack in place after each of the turning-lingers has been released, are thrown into gear with teeth of rack C by the spring Q. After the ingers have been all released and it-is desired to return them to theinflrst position-that shown'in Fig. l -the arms are raised by hand and brought back, and the screw 7o is moved up by the finger, raising pawl L and rack F out of contact with teeth on rack O, when the spring ICO draws the rack C back to its firstv position, and through the screw a the latch Z1 is returned to its first position and holds` the arms c c', &c., down.

It will be observed that the fingers f are made so that they may be removed from the arms c c', &e., and when it is desired to turn the leaves by hand the fingers may be removed from the arms and the musie-book placed, as usual, upon the turning-instrument. The instrument may be built upon the piano, and in this case it would be desirable to have the lingers removable.

The lingers f are constructed of two wires m n, or of one wi re bent over, and are soldered into a socket o, which is adapted to be placed over the bent-up part e of the arms c c', dac.

Having thus described my invention, l claim- .1. The combination of rack (l, pawl L, rack F, link I, lever J, and springs P, Q, and R, screw a, latch Z), and screw 7L', and leaf-turning fingers, all arranged and operatingl substantially as and for the purposes set forth.

2. The leaf-turningfingers f, with bifurcated ends m mand a socket o, adapted to be placed over the bent-up portions e oi' the arms c, substantially as described.

The herein-described device for releasing` the rack C and returning the latch I) to its rst position, consisting' ot' the pawl L, with nose N, and screw K and spring' P, all arranged and operating,` substantially as set forth.

EMILE J. lVI'lTEBOLLE.

XVitiiesscS:

JOHN I. GREEN, CHAs. A. BUTTER. 

